I have an honest question for theists.

[Reforged]

But thats not comparable, if free-will was an illusion you'd have no choice but to act as if you had it because whatevers pulling your strings has chosen thats how you should behave.
If you were given conclusive proof God didn't exist, that is to say that its 100% certain, you're saying you'd willingly, knowingly ignore it to fit in with your own beliefs on how reality should be.
Now correct me if I'm wrong but wouldn't that be textbook definition of self-delusion that borders on psychosis?

If it were discovered that God was real and proven conclusively then that would be fascinating, it would change everything and it'd be a subject of intense study. Of course it would be met with intense scepticism but so is every subject of scientific study, if the undeniable proof was there then we'd concede it as a fact yet you wouldn't be willing to change your views if it was irrevocably proven he wasn't? You wouldn't take an active interest in finding out how we really came to be? You'd just cling to your beliefs?
Is that really true?

Well I guess I would say it depends how convincing the proof is. If I was convinced 100% God doesn't exist, as opposed to 99.9%, then it changes. If I was 100% sure, I would not be able to act as if God exists.

Well, 100% certainty is the question posed to you.
If you were given 100% conclusive proof that God didn't exist how would you live your life? What would you make your purpose? Would you view the world with less wonder as a construct without meaning or with more wonder as a mystery still yet to be unravelled? Would it make you more motivated to live or less?
I mean theres so many implications and questions you'd have to consider, thats what this hypothetical is about.